Concrete-block mold.



PATENTED JAN. 1, 1907.

J. P. HEGKMAN. CONCRETE BLOCK MOLD.

APPLICATION rninn 00111. 1906.

2 SHEETS-SHEET 1-.

PATENTEDJANJ} 1907.

L P. HECKMAN. CONCRETE BLOCK MOLD. uruonxon 21mm 001.11. 1906.

JOHN P. HEOKMAN, OF ORESTON, OHIO.

CONCRETE-BLOCK MOLD.

Specification of Letters Patent.

iatented. Jan. 1, 1907.

Application filed October 11, 1906. flerial No. 338.382.

To all whom it may concern.-

Be it known that I, JOHN P. HECKMAN, a citizen of the United States,residing at Oreston, in the county of Wayne and State of Ohio, haveinvented certain new and useful Improvements in Concrete-Block Molds, ofwhich the following is a specification.

This invention relates to new and; useful improvements in molds forforming artificialstone blocks, and it particularly relates to a mold ofthe type known in the art as gangmold.

The invention aims as a primary object to provide a mold embodying anovel construction and arrangement of separable sides.

The invention aims as a further object to provide means for readilyassembling and disassembling the mold for the purposes contem lated.

T e invention also aims to provide an apparatus of the above type whichmay be readily assembled and disassembled as an entirety and in whichaccess may be readily had to any desired part for the purpose ofrepairing or removing the same.

The invention finally aims to provide a mold which shall be simple inconstruction, inexpensive to manufacture, and practical and eflicient inuse.

The detailed construction will appear in the course of the followingdescription, in which reference is had to the accompanying drawings,forming a part of this specification, like numerals designating likeparts through out the several views, wherein Figure 1 is a top plan viewof a mold con structed in accordance with my invention.

Fig. 2 is a vertical sectional view thereof on the line 2 2 of Fig. 1looking in the direction of the arrow. Fig. 3 is a side elevationthereof. Fig. 4 is a section on the line 4 4 of Fig. 1 looking in thedirection of the arrow, and Figs. 5 and 6 are detailed perspective viewsof elements of the invention to be hereinafter specifically referred to.

Referring specifically to the accompanying drawings, the numeral 1designates a supporting-frame upon which the elements of the mold aredetachably mounted. The frame 1 is provided at the front of its upperside bars with concaved bearings 2, within which are supported thereduced rounded ends 3 of a transversely-extending rod 4 of squarecross-sectional shape. The rear portions of the sides of the frame 1 areextended vertically, as at 5, as is indicated in dotted lines in Fig. 3,to afford a stop against the rearward displacement of a transverse bar6, loosely supported upon said frame and having its ends extended, as at7, and shaped to form a handle. A cam-catch 8 is pivoted upon the frame1 adjacent the bar 6 and is designed to engage said bar to preventd1splacement thereof. g The rear walls of the several moldsconstituting'the gang are 'supported from the rod ,6 and are designatedby the numeral 9. One ofsaid rear walls is illustrated in detail in Fig.5 and comprises a member provided at its upper end with arearwardly-extending flange 10, by which it is secured to the rod 6, andat its lower end with a longitudinal horizontal sleeve 11. The members 9are supported upon the rod 6 in spaced relation, as is clearly shown inFig. 1, and they are maintained in the proper relative disposition bymeans of a rod 12, extending through the sleeves 11 and supported at itsends in pivoted or compensating bearings 13, provided upon the sides ofthe frame 1.

The bar 4 serves as a positive support for the front and bottom walls ofthe molds. The latter are best shown in Fig. 4 and comprise a frontportion 14 and a bottom portion '15, preferably formed integral in anL-shaped casting. The bottom 15 is provided at its outer end with adepending flange 16, which rests upon the adjacent sleeve 11 as a stop.The front 14 is provided with a forwardly-em tending flange 17, which issecured to rod4. The rod 12 also serves as a support for the sides 18 ofthe molds. These latter are illustrated in detail in Fig. 6 and areformed at their rear ends with a depending apertured lug 19, throughwhich the rod 12 passes. The sides 18 are received between the flanges10 of the rear walls 9 or, more properly, in the spaces between saidrear walls and between the front and bottom walls. The sides 18 areformed at their upper front corner with overhanging lugs 20, which serveas hooks to engage the rod 4 in the spaces between the flanges 17. Atthe points where the hooks 2O engage the rod 4, the latter is rounded,as is shown by the dotted line 21 in Fig. 4, to conform to the curvatureof the inner bearingsurface of the lug 20. The frame 1 is provided withforwardly-extending arms 22, suitably constructed to support a pivoteddrop-pallet 23 and a stationary pallet-board 24.

The drop-pallet 23 is provided at its rear end with lateral extensions25, which work in ICO IIC-

bearings 26, provided upon the arms 22 and at its front end with acentrally-located handle 27 for convenience of manipulation. The rod 4is provided adjacent the bearings 2 with annular spacing-flanges 28 formaintaining the end side walls 18 in their proper relative disposition.The frame 1 is provided at its sides with vertical arms 30, which coactwith flanges 28 to maintain the end side plates 18 in their properposition and to this end bear against the said plates, as is shown. Therod 4 carries at its ends detachably-secured handles 29 for themanipulation thereof.

In use the mold is assembled as shown. Semisolid material is introducedinto the several mold-spaces formed by the side walls 18, the rear walls9, and the front and bottom walls 14 and 15. The material is then tampedand when it becomes set is discharged from the mold. This is effected bylifting the catches 8 and by rotating the rod 4 by means of the handles29. Such rotation raises the bottom 15 and the front wall 14 upon therod 4 as a pivot and lifts the blocks between the sides 18 withoutdisturbing the relative positions of said sides. As the bottoms 15 movein their pivotal travel they engage the rear walls 9 and displace thesame upon the rod 13 as a pivot until the frame extensions 5 are engagedby the rod 6 in its rearwardly-yielding movement. One or more of theflanges 17 carry abutments 31, which engage the pallet-board 24,supported upon the drop-pallet 23, and move the same clear of the frontof the mold. The blocks are received on the pallet-board. 24, thedroppallet 23 being raised upon its bearings to lift said pallet-boardand. facilitate the removal of the blocks. The rotation of the rod 4 inthe opposite direction restores the front and bottom walls to theiroperative position, and the mold is reassembled by engaging the catches8 with the rod 6.

While the elements herein shown and described are well adapted to servethe functions set forth, it is obvious that various minor changes may bemade in the proportions, shape, and arrangement of the several partswithout departing from the spirit and scope of the invention as definedin the appended claims.

Having fully described my invention, I claim- 1. A molding apparatuscomprising a supporting-frame, rear mold-walls supported therefrom inspaced relation, a horizontal shaft mounted in said frame longitudinallythereof, said rear walls being formed with abruptly-enlarged lower ends,front walls fixed to said shaft in spaced relation, bottom wallsseverally fixed in spaced relation to the respective front walls andhaving their rear portions resting upon the enlarged lower ends of saidrear walls and side walls interposed in the spaces between said rear,front, and bottom walls.

2. A molding apparatus comprising a supporting-frame, a rod mountedrearwardly and longitudinally thereof, rear mold-walls having theirlower ends sleeved to surround said rod, said rear walls being arrangedin spaced relation, a shaft mounted forwardly and longitudinally of saidframe, front walls fixed to said shaft in spaced relation, bottom wallsfixed. severally to said front walls in spaced relation, said bottomwalls having their rear ends supported upon said sleeved ends of saidrear walls and side walls interposed in the spaces between said rear,front and bottom walls, said side walls having loose connection at theirrespective adjacent ends with said rod and said shaft as supports.

3. A molding apparatus comprising a supporting-frame, rear walls carriedthereby and adapted to have a restricted movement upon their lower endsas pivotal axes, stationarily-supported side walls, a shaft mountedforwardly and longitudinally of said frame, front walls fixed to saidshaft, bottom walls fixed to said front walls and designed for movementtherewith upon the rotation of said shaft, said. bottom walls in theirmovement being designed to displace said rear walls upon their pivotedlower ends and means for holding said rear walls against displacement ontheir pivots.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN P. HECKMAN. I

Witnesses J. G. MATTESON, PRICE RUssELL.

